The 9x15 low speed tunnel tests take off and landing of aircraft.  The laser velocimetry system for flow measurement show here, with the color blue and green lasers, measures engine exhaust that comes back up from the ground.  The STOVL model n the 9x15 low speed wind tunnel, building 39, is similar to the British Harrier aircraft.
GRC-1994-C-00158
Autonomous Perception Vision project - Intelligent Systems - Machine Vision, Fusing Photonics and A.I. - Fiber-Optic Probe for Laser Velocimetry (Mars)
ARC-1987-AC87-0211-2
LASER Velocimetry System for Flow Measurement.  Advanced Short Takeoff and Vertical Landing, ASTOVL model n the 9x15 foot Low Speed Wind Tunnel, LSWT
GRC-1994-C-00160
The 9x15 low speed tunnel tests take off and landing of aircraft.  The laser velocimetry system for flow measurement show here, with the color blue and green lasers, measures engine exhaust that comes back up from the ground.  The STOVL model n the 9x15 low speed wind tunnel, building 39, is similar to the British Harrier aircraft.
STOVL (Short Take Off Vertical Landing) Phase III Hot Gas Ingestion Into Engine Intake Test in the 9x15 Low Speed Wind Tunnel